What is CVE-2026-6718?

CVE-2026-6718 is a medium-severity vulnerability in IBM Concert, classified under Incorrect Default Permissions. CVSS score: 6.2/10. Published 2026-09-23.

How severe is CVE-2026-6718?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Vulnerability in IBM Concert

CVE-2026-6718

IBM Concert 1.0.0 through 3.0.0 is vulnerable to improper access control which allows unauthorized modification of application files.

Published 2026-09-23.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM Concert

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

www.ibm.com/support/pages/node/7288830 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-6718?: CVE-2026-6718 is a medium-severity vulnerability in IBM Concert, classified under Incorrect Default Permissions. CVSS score: 6.2/10. Published 2026-09-23.
How severe is CVE-2026-6718?: Medium severity. CVSS v3 base score is 6.2 out of 10.